Remove VideoEncoder::SetChannelParameters.

The SetChannelParameters function was used when WebRTC supported decoding
with errors, which we no longer do.

This cleanup CL is related to the work tracked by 9946.

Bug: webrtc:9946
Change-Id: Id2d5ed23031388f890c42651bfbe5f79eda701e5
Reviewed-on: https://webrtc-review.googlesource.com/c/108861
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25505}

sdk/android/src/java/org/webrtc/HardwareVideoEncoder.java

@@ -403,12 +403,6 @@ class HardwareVideoEncoder implements VideoEncoder {
     return VideoCodecStatus.OK;
   }
 
-  @Override
-  public VideoCodecStatus setChannelParameters(short packetLoss, long roundTripTimeMs) {
-    encodeThreadChecker.checkIsOnValidThread();
-    return VideoCodecStatus.OK; // No op.
-  }
-
   @Override
   public VideoCodecStatus setRateAllocation(BitrateAllocation bitrateAllocation, int framerate) {
     encodeThreadChecker.checkIsOnValidThread();